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JOURNALS // Sibirskii Zhurnal Industrial'noi Matematiki // Archive

Sib. Zh. Ind. Mat., 2024 Volume 27, Number 3, Pages 26–35 (Mi sjim1288)

On conditions for the well-posed solvability of a factorization problem and a class of truncated Wiener—Hopf equations

A. F. Voronin

Sobolev Institute of Mathematics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Abstract: This paper continues the study of the relationship between the convolution equation of the second kind on a finite interval $(0, \tau)$ (which is also called the truncated Wiener—Hopf equation) and a factorization problem (which is also called a vector Riemann—Hilbert boundary value problem or a vector Riemann boundary value problem). The factorization problem is associated with a family of truncated Wiener—Hopf equations depending on the parameter $\tau\in(0, \infty)$. The well-posed solvability of this family of equations is shown depending on the existence of a canonical factorization of some matrix function. In addition, various possible applications of the factorization problem and truncated Wiener—Hopf equations are considered.

Keywords: Wiener algebra, factorization problem, partial index, truncated Wiener—Hopf equation.

UDC: 517.544

Received: 21.01.2024
Revised: 11.05.2024
Accepted: 22.05.2024

DOI: 10.33048/SIBJIM.2024.27.303


 English version:
Journal of Applied and Industrial Mathematics, 2024, 18:3, 575–582


© Steklov Math. Inst. of RAS, 2025